The calculated distance (air line) between Kirchberg and Zürich (Kreis 6) is approximately 50 miles respectively 80 kilometers.
By car or train, the actual journey to Zürich (Kreis 6) is certainly longer, as only the direct route (as the crow flies) between Kirchberg and Zürich (Kreis 6) has been calculated here.
Air line (approximately)
80 kilometers
43 nautical miles